Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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Textbook Question
Chapter 20, Problem 20.72E
Most human enzymes function best in the temperature range of:
a.
b.
c.
d.
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If NaOH is combined with CH3OCH 3, which of the following reaction diagrams best represents
the reaction that would ensue? Assume that the absolute values of the differences in pKabH
values of reactants and products in the figures are all less than 10 units.
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products
III
products
IV
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products
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Reaction Coordinate
reactants
Reaction Coordinate
reactants
Reaction Coordinate
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V None of the other choices is correct because essentially no reaction would occur
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IV
N2 and O2 are mixed in a flask and react (according to the equation below). Once the rxn achieved equilibrium [NO]eq = 1.8 mM, [O2]eq = 1.2 mM and [NO2]eq = 780 mM. What is the Kc value at this temperature? Identify whether the reaction is product favored or reactant favored at equilibrium.
N2(g) + O2(g)⟷⟷ 2NO(g)
A)Rxn is product favored at equilibrium
B)Kc = 2.8 x 10-6
C)Rxn is reactant favored at equilibrium
D)Kc = 3.6 x 105
E)Kc = 6.3 x 10-9
F)Kc = 1.6 x 108
Q7. Some spontaneous reactions take 20 million years for half of the reactants to be converted into products while other reactions take 10 seconds. What is the basis for this difference in rate?
A. Reactions take longer the closer their ΔG is to zero.
B. The rate is dependent upon the concentration of substrate molecules.
C. Reactions where substrate molecules can more readily reach the transition state occur faster.
D. The rate of the reaction is dependent upon a supply of energy - thus coupled reactions that utilize ATP are the fastest.
Chapter 20 Solutions
Chemistry for Today: General, Organic, and Biochemistry
Ch. 20 - What is the role of enzymes in the body?Ch. 20 - List two ways that enzyme catalysis of a reaction...Ch. 20 - What is the relationship between an enzyme and the...Ch. 20 - Why are so many different enzymes needed?Ch. 20 - Define what is meant by the term enzyme...Ch. 20 - Prob. 20.6ECh. 20 - Prob. 20.7ECh. 20 - Prob. 20.8ECh. 20 - What is the relationship between urea and urease?...Ch. 20 - Match the following enzymes and substrates: Enzyme...
Ch. 20 - Match the following general enzyme names and...Ch. 20 - Prob. 20.12ECh. 20 - Some enzymes consist of protein plus another...Ch. 20 - Prob. 20.14ECh. 20 - Prob. 20.15ECh. 20 - Prob. 20.16ECh. 20 - Prob. 20.17ECh. 20 - Prob. 20.18ECh. 20 - Prob. 20.19ECh. 20 - How is enzyme specificity explained by the...Ch. 20 - Prob. 20.21ECh. 20 - Prob. 20.22ECh. 20 - Prob. 20.23ECh. 20 - What observations may be used in experiments to...Ch. 20 - Prob. 20.25ECh. 20 - Prob. 20.26ECh. 20 - Prob. 20.27ECh. 20 - Write a single sentence to summarize the...Ch. 20 - Prob. 20.29ECh. 20 - Prob. 20.30ECh. 20 - Prob. 20.31ECh. 20 - When handling or storing solutions of enzymes, the...Ch. 20 - Prob. 20.33ECh. 20 - Prob. 20.34ECh. 20 - Prob. 20.35ECh. 20 - List an antidote for each of the two poisons in...Ch. 20 - Prob. 20.37ECh. 20 - Prob. 20.38ECh. 20 - Describe the importance of zymogens in the body....Ch. 20 - Prob. 20.40ECh. 20 - Prob. 20.41ECh. 20 - Name and contrast the two types of modulators.Ch. 20 - Prob. 20.43ECh. 20 - Prob. 20.44ECh. 20 - Prob. 20.45ECh. 20 - Prob. 20.46ECh. 20 - Prob. 20.47ECh. 20 - Prob. 20.48ECh. 20 - Prob. 20.49ECh. 20 - Prob. 20.50ECh. 20 - Prob. 20.51ECh. 20 - Prob. 20.52ECh. 20 - Prob. 20.53ECh. 20 - Prob. 20.54ECh. 20 - Explain how the pasteurization of milk utilizes...Ch. 20 - Prob. 20.56ECh. 20 - Prob. 20.57ECh. 20 - Prob. 20.58ECh. 20 - Prob. 20.59ECh. 20 - Why are enzymes that are used for laboratory or...Ch. 20 - Describe the difference between graphs showing...Ch. 20 - Answer the question associated with Figure 20.3....Ch. 20 - Prob. 20.63ECh. 20 - Prob. 20.64ECh. 20 - Prob. 20.65ECh. 20 - Prob. 20.66ECh. 20 - Prob. 20.67ECh. 20 - Which of the following is not a characteristic of...Ch. 20 - The human body has an average pH of about 7 and a...Ch. 20 - Look at Table 20.4 and identify the proteolytic...Ch. 20 - Saliva contains mucus, water, and _______, which...Ch. 20 - Most human enzymes function best in the...Ch. 20 - The site on an enzyme molecule that does the...Ch. 20 - The process by which an enzyme acts on the...Ch. 20 - In the multienzyme sequence shown below, molecules...
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